Scoop then form the meatballs into 1.5 ounce balls, making about 12 meatballs. Lay this on a parchment or foil lined sheet tray.
Cook the meatballs for 10 minutes at 375F.
Heat a pan on medium high heat. Add 2 tablespoons of oil, then the sliced scallions and quartered mushrooms. Cook until the mushrooms are golden, about 5 minutes.
1 tbsp vegetable oil, 6 ounces brown button mushrooms
Add the cabbage into the pan and give everything a stir. Add the broth, water, salt, soy sauce, sugar, and sesame oil. Bring this up to a simmer, then add the meatballs.
1 tbsp brown sugar, 1 tbsp light soy sauce, ½ teaspoon kosher salt, 2 cups broth, 1 cup water, 1/2 head Napa cabbage, 1 tbsp sesame oil
Cover and cook for 10 minutes.
Taste, adjust seasoning as desired, then serve with grains.